Disappearing rotary hydrocarbon fuel burner



0611. 13, v T, DAVE; 7 1,826,995

DISAPPEARING ROTARY HYDROCARBON FUEL BURNER Filed Mafbh 14. 1928 Trqyharn Davis INVENTOR.

BY W

ATT EY Fly- 4 l atentecl Oct. 13,1931

' TRAYHARN DAVIS, OF

ATENT OFFICE BERKELEY, CALIFORNIA" 'DISA PPE'ARING ROTARY HYDROCARBON FUEL BURNER Application filed Marchl l, 1928'. Serial No. 261,597.

This invention relates generally to hydrocarbon fuel burners; it has especial relation,

to such burners. of the rotary type wherein the rotary element operates within the heat zone of the completed structure; and it con sists in the novel construction, arrangement and combinationof parts,,hereinafter described and later claimed. Y e

The object ofmy invention is to provide a device of this character wherein it ispossible, by a simple, convenient, and efficient mechanical arrangement of parts, to raise or to lower the burner into or. out of. operative position. When in operative position the rotary ele ment, or cup, of the burner, by means of which the fuel is atomized and fed into the fire-box, travels at great velocity (often approximating 4,000 B. P. M.), and, therefore,

I it must at all times be positively centered to be effective. In the operation of devices of this character, prior to my discovery, it has been the practice to cause the cup to be re A, volved and the air current to be maintained 25 for a considerable period of time after the fuel supply for the burner has been shut off, otherwise the intense heat (often as high as 1,500 F.) radiated from the firebox tends not only to cause the unconsumed fuel left in the cup to cake, or to carbonize, on the cup, but, also, tends to warp the cup and shaft supporting the cup, thereby destroying the efficiency of the entire structure,

In my structure I provide mechanism for lowering and raising the burner. I now make it possible to withdraw the cup from the influence of the intense heat of the firebox, thereby eliminating all danger to the cup and its shaft from the efiects of radiated for the cup may be shut off s'imultaneouly with the shutting off of the fuel supply and ward all heat waves (the results of radiaheat. In my device, also, the prime mover tion) and effectually prevent any caking or carbonizing of. fuel on the cup, and prevent any warping of parts.

In order. that my invention may be clearly understood and readily carried intoeffect,the same is hereinafter described with reference to the accompanying drawings, in which similar numerals indicate like parts. Of such drawings, Y c

Fig. 1, is. a side elevation of my device, showing the burner in operative position;

Fig. 2 is a view similar to Fig. 1, showing the burner lowered, or outof'operative position;

partsfin the same positionas in Fig. 2;

Fig. 4 is a'front, elevation, the parts in the sameposition as in Fig, 2.

Fig. 3 1s aplan partly broken, the

In detail, my construction is as follows:

Rlsing from agbase, 2, are ivertlcal supports,

3,'which support aguide-ring, 4, adaptedto re 'civelthe burner when the'same is in operativefposition. The burner, as shown int-he drawings, is of the rotary type. It" comprises, generally, a verticallydisposed cylindrical body, "A, an "o en head, B,;;a closed base, C, and a rotatably fuel cup, D. For amore detailedd eiscription of the specific'burner, preferred by me, reference ishereby made to my co-pending application for patent on a liquid fuelburner, filed May 24, 1927, Serial No.193,763. i

An inwardly extending flange, 5, on said ring, 4, cooperates, with an' outwardly extending flange, 6, on said head, B, and by reason of't he co-operation of these two flanges the upward movement of the burner is. limited.

eitherra'ised or lowered. Integral with the They burner is so constructed that it maybe cylindrical",body,A, arelugs, 7 adapted to receive vertical guides, 8, attached4to and rismg from the base, 2. Interposed between said lugsand sald base are powerful compression springs, 9, which exert a constant up-- 9 wardpressure againt said cylindrical body, A, and tend to keep it in its operative position, as shown in' Fig. 'l. Pivoted tosaid base, as at10, is a hand lever, 11. A bell-v crank, 12, mounted" on said base, as at 13, is

connected with the lever, 11, by means of a connecting rod, 14-, pivoted at one end to said lever, as at 15, and at the other end to the backward arm of said bell-crank, as at 16. The forward end of said bell-crank is slotted, as at 17, to engage a pin (not shown) mounted on the under side of said closed base, C.

Said lever, 11, is provided with a spring cont-rolled pawl, 18, adapted to engage notches, 19, provided in the vertical segment ratchet-bar, 20, rising from said base. WVhen the pawl is in the backward notch, as shown in Fig. 1, the burner is in its normal, or operative, position; when the pawl is in the forward notch, as shown in Fig. 2, the burner is in its lowered, or inoperative, posit-ion. IV hen the burner is in a lowered, or inoperative, position, so long as there is any stack draft, due to heated conditions of the firebox, currents of air from without, as inclicated by arrows in Fig. 2, will sweep over the top surface of the burner, the rotatable cup and shaft, into the opening in the ring, 4, caused by the withdrawal of the burner head, and out the stack,thereby carrying all heat waves upward and away from the burner, rotatable fuel cup, and shaft.

I would have it understood that the construction herein illustrated and particularly described is intended to exemplify what is at present regarded to be the preferred embodiment of my invention, and that the invention may be otherwise and variously embodied without departing from its spirit or the scope of the subjoined claims.

Having thus described my invention, what I desire to claim and to secure by Letters Patent is z"- 1. In a hydrocarbon fuel burner of the rotary type,a burner susceptible of fixed adjustments up and down, a pressure member for holding said burner in operative position, guides for said burner, and means for changing said burner to an inoperative position and for retaining the same in a fixed inoperative position against the action of said pressure member for cooling purposes.

2. In a hydrocarbon fuel burner of the rotary type, a burner susceptible of fixed adjustments, up and down, a pressure member for holding said burner in operative position, guides for said burner, and means for withdrawing said burner from operative position after use to an inoperative position against the action of said pressure member and for holding the same in said inoperative position without the heat Zone during the cooling process.

3. In a device of the character described, a frame, a movable rotary burner, a pair of flanges co-operating to limit the movement of the burner in one direction, a pressure member for holding said burner in operative position, and means for moving the burner into or out of operative position, and means for holding said burner in locked inoperative position against the action of said pressure member for cooling purposes.

4. In a device of the character described, a frame, a vertically disposed rotary burner, a pressure member for holding said burner in operative position, guides for said burner, a guide-ring provided with an inwardly eX- .tending flange constituting a stop for the upward movement of said burner, and means for moving said burner into or out of operative position, and means for retaining said burner in fixed inoperative position against the action of said pressure member without the heat Zone for cooling purposes.

5. In a device of the character described, a rotatable burner susceptible of up and down fixed adjustments, a pressure member for holding said burner in operative position, guides for said burner, a stop to limit the movement of said burner in one direction, and means for moving said burner into or out of operative position, and means for holding said burner in locked inoperative position against the action of said pressure member for cooling purposes.

In testimony whereof, I have hereunto set my signature. 7

TRAYHARN DAVIS. 

